TS39100/1/2/3

1-10

2004/06 rev. E

TS39100/1/2/3

1.0A Ultra Low Dropout Positive Voltage Regulator

Low Dropout Voltage 0.4V (typ.)

Enable Input Control

Adjustable Output

Error Flag Detection

General Description

The TS39100/1/2/3 series are 1A ultra low dropout linear voltage regulators that provide low voltage, high current output
from an extremely small package. These regulator offers extremely low dropout (typically 400mV at 1A) and very low
ground current (typically 12mA at 1A).
The TS39100/1/2/3 series are fully protected against over current faults, reversed input polarity, reversed lead insertion,
over temperature operation, positive and negative transient voltage spikes, logic level enable control and error flag which
signals whenever the output falls out of regulation.
On the TS39101/2/3, the enable pin may be tied to Vin if it is not required for enable control. This series are offered in
3-pin SOT-223 (TS39100), 8-pin SOP (TS39101/2) and 5-pin TO-252 (TS39103) package.

Features

Dropout voltage typically 0.4V @Io=1.0A

Output current up to 1.0A

Low ground current

Output voltage trimmed before assembly

Extremely fast transient response

Reversed leakage protection

Reverse battery protection

Error flag signals output out of regulation

Internal current limit

Thermal shutdown protection

Ordering Information

Note: Where

denotes voltage option, available are

5.0V, 3.3V, 2.5V, 1.8V and 1.5V. Leave blank for
adjustable version (only TS39103). Contact to
factory for addition output voltage option.

Part No.

Operating Temp.

(Junction)

Package

TS39100CW

SOT-223

TS39100CP

TO-252

TS39101CS

TS39102CS

SOP-8

TS39103CP5

-40 ~ +125

TO-252-5L

Applications

Battery power equipment

LDO linear regulator for PC add-in cards

PowerPC

power supplies

Multimedia and PC processor supplies

High efficiency linear power supplies

High efficiency post regulator for switching supply

Low-voltage microcontrollers and digital logic

SMPS post regulator

Absolute Maximum Rating

(Note 1)

Supply Voltage

Vin

-20V ~ +20

Enable Voltage

Ven

+20

Storage Temperature Range

STG

-65 ~ +150

Lead Soldering Temperature (260

ESD

(Note 3)

TS39100/1/2/3

2-10

2004/06 rev. E

Operating Rating

(Note 2)

Operation Input Voltage

Vin (operate)

+2.25 ~ +16

Operation Enable Voltage

Ven (operate)

+2.25 ~ +16

Power Dissipation (Note 4)

Internally Limited

Operating Junction Temperature Range

-40 ~ +125

Electrical Characteristics

Vin = Vout + 1V, Venable= 2.25V, Tj = 25

C, unless otherwise specified.

Parameter Conditions

Min

Typ

Max

Unit

Output Voltage

=10mA 0.990|Vo|

1.010|Vo|

Output Voltage

10mA

1.0A,

Vo+1V

Vin 8V

0.980|Vo|

Vout

1.020|Vo|

Line Regulation

=10mA, Vo+1V

Vin 16V

0.05

0.5

Load Regulation

Vin=Vout+1V, 10mA

1A -- 0.2 1.0 %

Output Voltage Temp. Coefficient

100

ppm/

Dropout Voltage (Note 5)

Vout= -1%

=100mA

=500mA

=750mA

=1.0A

--
--
--
--

100
275
350
400

250

500
630

Quiescent Current (Note 6)

Vin=V

out

+1V

=100mA

=500mA

=750mA

=1.0A

--
--
--
--

0.7
4.0
7.0

12.0

--
--
--

Current Limited

Vout=0, Vin=Vout+1V

-- 1.8 2.5 A

Reference (TS39102)

Reference Voltage

0.980|Vo|

1.020|Vo|

Reference Voltage

(Note 7)

0.970|Vo|

1.24

1.030|Vo| V

Adjust Pin Bias Current

120

Reference Voltage Temp. Coefficient

(Note 8)

ppm/

Adjust Pin Bias Current Temp.
Coefficient

-- 0.1 --

nA/

Flag Output (TS39101)

Output Leakage Current

=16V --

Output Low Voltage (Note 9)

Vin=0.9 * Vout, I

=250uA -- -- 400 mV

Upper Threshold Voltage

% of Vout

Lower Threshold Voltage

% of Vout

Hysteresis

Enable Input (TS39101 / 2 / 3)

Low (OFF)

0.8

Input Logic Voltage

High (ON)

2.25

Ven=2.25V --

Enable Pin Input Current

Ven=0.8V --

TS39100/1/2/3

3-10

2004/06 rev. E

Thermal Performance

Condition Package

type

Typ Unit

SOT-223 15

SOP-8 20

Thermal Resistance

Junction to Ambient

TO-252 25

C/W

Note 1: Absolute Maximum Rating is limits beyond which damage to the device may occur. For guaranteed

specifications and test conditions see the Electrical Characteristics.

Note 2: The device is not guaranteed to operate outside its operating rating.

Note 3: Devices are ESD sensitive. Handling precautions recommended.

Note 4: The maximum allowable power dissipation is a function of the maximum junction temperature, Tj, the junction to

ambient thermal resistance, ja, and the ambient temperature, Ta. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. The effective
value of ja can be reduced by using a heatsink, Pd

(max)

= (Tj

(max)

� Ta) / ja.

Note 5: Dropout voltage is defined as the input to output differential at which the output voltage drops -1% below its

nominal value measured at 1V differential.

Note 6: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the

ground pin current and output load current, Iin = Ignd + Iout.

Note 7: Vref

Vout (Vin � 1V), 2.25V Vin 16V, 10mA I

1.0A.

Note 8: Output voltage temperature coefficient is Vout (worse cast) / (Tj

(max)

- Tj

(min)

) where is Tj

(max)

+125

C and

(min)

is 0

Note 9: For adjustable device and fiexed device with Vout > 2.25V.

Block Diagram

TS39100

TS39100/1/2/3

5-10

2004/06 rev. E

Pin Assignment

Pin No.

TS39100 TS39101 TS39102 TS39103

Pin Configuration

Pin

Description

1 1 1

Enable

Enable (input): TTL/COMS compatible
input. Logic high is enable; logic low or
open is shutdown

1 2 2 2

Input

Unregulated input: +26V maximum

supply

2 5,6,7,8

5,6,7,8 3

Ground

Ground: Ground pin and TAB/heatsink
are internally connected.

3 3 3 4

Output Regulator

output

Flag

(fixed output voltage)

Error Flag (output): Open-collector
output. Active low indicates an output
fault condition, if no used, leave open.

Feed Back

(adjustable voltage)

Adjustment input: Feedback input.
Connect to resistive voltage-divider
network.

Typical Application Circuit

TS39100/1/2/3

6-10

2004/06 rev. E

Application Information

The TS39100/1/2/3 series are high performance with
low dropout voltage regulator suitable for moderate to
high current and voltage regulator application. Its
630mV dropout voltage at full load and over
temperature makes it especially valuable in battery
power systems and as high efficiency noise filters in
post regulator applications. Unlike normal NPN
transistor design, where the base to emitter voltage
drop and collector to emitter saturation voltage limit the
minimum dropout voltage, dropout performance of the
PNP output of these devices is limited only by low Vce
saturation voltage.
The TS39100/1/2/3 series is fully protected from
damage due to fault conditions. Linear current limiting is
provided. Output current during overload conditions is
constant. Thermal shutdown the device when the die
temperature exceeds the maximum safe operating
temperature. Transient protection allows device survival
even when the input voltage spikes above and below
nominal. The output structure of these regulators allows
voltages in excess of the desired output voltage to be
applied without reverse current flow.

Output Capacitor Requirement

The TS39100/1/2/3 series requires an output capacitor
to maintain stability and improve transient response is
necessary. The value of this capacitor is dependent
upon the output current, lower currents allow smaller
capacitors. TS39100/1/2/3 series output capacitor
selection is dependent upon the ESR of the output
capacitor to maintain stability. When the output
capacitor is 10uF or greater, the output capacitor should
have an ESR less than 2. This will improve transient
response as well as promote stability. Ultra low ESR
capacitors (<100m), such as ceramic chip capacitors,
may promote instability. These very low ESR levels may
cause an oscillation and/or under damped transient
response. A low ESR solid tantalum capacitor works
extremely well and provides good transient response
and stability over temperature aluminum electrolytes
can also be used, as long as the ESR of the capacitor is
<2.

The value of the output capacitor can be increased
without limit. Higher capacitance values help to
improve transient response and ripple rejection and
reduce output noise.

Input Capacitor Requirement

An input capacitor of 1uF or greater is recommended
when the device is more than 4" away from the bulk
AC supply capacitance or when the supply is a battery.
Small, surface mount, ceramic chip cpapcitors can be
used for bypassing. Larger values will help to improve
ripple rejection by bypassing the input to the regulator,
further improving the integrity of the output voltage.

Minimum Load Current

The TS39100/1/2/3 series is specified between finite
loads. If the output current is too small leakage
currents dominate and the output voltage rises. A
10mA minimum load current is necessary for proper
regulation.

Adjustable Regulator Design

The adjustable regulator versions (TS39102) is allow
to programming the output voltage anywhere between
1.25 and the 16V maximum operating rating of the
family.
Two resistors are used. Resistors can be quite large
up to 1M, because of the very high input impedance
and low bias current of the sense comparator, the
resistor values are calculated by:

R1 = R2 * [(Vout / 1.24) � 1]

Where Vout is the desired output voltage. Above
application circuit shows component definition.
Applications with widely varying load currents may
scale the resistors to draw the minimum load current
required for proper operation.

TS39100/1/2/3

7-10

2004/06 rev. E

Application Information (continues)

Error Flag

TS39101 versions feature an Error Flag, which looks
at the output voltage and signals an error condition
when this voltage drops 5% below its expected value.
The error flag is an open-collector output that pulls low
under fault conditions. It may sink 10mA. Low output
voltage signifies a number of possible problems,
including an over-current fault (the device is in current
limit) or low input voltage. The flag output is
inoperative during over temperature shutdown
conditions. A pull-up resistor from error flag to either
Vin or Vout is required for proper operation. For
information regarding the minimum and maximum
values of pull-up resistance, refer the graph as follow:

Enable Input

TS39101/2/3 versions feature an active-high enable
(EN) input that allows ON/OFF control of the regulator.
Current drain reduces to "zero" when the device is
shutdown, with only micro-amperes of leakage current.
The EN input has TTL/CMOS compatible thresholds
for simple interfacing with logic interfacing. EN may be
directly tied to Vin and pulled up to the maximum
supply voltage.

Transient Response and 3.3V to 2.5V
or 2.5V to 1.8V Conversion

TS39101/2/3 has excellent transient response to
variations in input voltage and load current. The device
have been designed to respond quickly to load current
variations and input voltage variations.

Large output capacitors are not required to obtain this
performance. A standard 10uF output capacitor,
preferably tantalum, is all that is required. Larger values
help to improve performance even further.
By virtue of its low dropout voltage, this device does not
saturate into dropout as readily as similar NPN base
designs. When converting from 3.3V to 2.5V or 2.5V to
1.8V, the NPN based regulators are already operating
in dropout, with typical dropout requirements of 1.2V or
greater,. To convert down to 2.5V or 1.8V without
operating in dropout, NPN based regulators require an
input voltage of 3.7V at the very least.
The TS39100 regulator will provide excellent
performance with an input as low as 3.0V or 2.5V
respectively. This gives the PNP based regulators a
distinct advantage over older, NPN based linear
regulators.

Power SOP-8 Thermal Characteristics

TS39101/2 series' performance is its power SOP-8
package featuring half the thermal resistance of a
standard SOP-8 package. Lower thermal resistance
means more output current or higher input voltage for a
given package size.
Lower thermal resistance is achieved by connect the
four ground pins with the die attached pad to create a
single piece electrical and thermal conductor. This
concept have been used by MOSFET production for
years, proving very reliable and cost effective for the
user. As under:

TS39100/1/2/3

8-10

2004/06 rev. E

Application Information (continues)

Thermal resistance consists of two main elements, jc
(junction to case) and ca (case to ambient). Using the
power SOP-8 reduces ca, the total thermal
resistance, ja (junction to ambient) is the limiting
factor in calculating the maximum power dissipation
capability of the device. Typically, the power SOP-8
have a jc of 20

C/W dramatically , this is significantly

lower than the standard SOP-8 which is typically
75

C/W. ca is reduced because pin 5~8 can be

soldered directly to a ground plane which significantly
reduces the case to sink and sink to ambient thermal
resistance.

Power Dissipation

From under curves, the minimum area of copper
necessary for the par to operate safely can be
determined. The maximum allowable temperature rise
must be calculated to determine operation along
which curve.

TS39100/1/2/3

9-10

2004/06 rev. E

SOT-223 Mechanical Drawing

SOT-223 DIMENSION

MILLIMETERS INCHES

DIM

MIN MAX MIN MAX

A 6.350 6.850 0.250 0.270
B 2.900 3.100 0.114 0.122
C 3.450 3.750 0.136 0.148
D 0.595 0.635 0.023 0.025
E 4.550 4.650 0.179 0.183
F 2.250 2.350 0.088 0.093

G 0.835 1.035 0.032 0.041

H 6.700 7.300 0.263 0.287

I 0.250 0.355 0.010 0.014

J 10� 16� 10� 16�

K 1.550 1.800 0.061 0.071

TO-252 Mechanical Drawing

TO-252 DIMENSION

MILLIMETERS INCHES

DIM

MIN MAX MIN MAX

A 6.570 6.840 0.259 0.269
B 9.250 10.400 0.364 0.409
C 0.550 0.700 0.022 0.028
D 2.560 2.670 0.101 0.105
E 2.300 2.390 0.090 0.094
F 0.490 0.570 0.019 0.022

G 1.460 1.580 0.057 0.062

H 0.520 0.570 0.020 0.022

I 5.340 5.550 0.210 0.219

J 1.460 1.640 0.057 0.065

TS39100/1/2/3

10-10

2004/06 rev. E

SOP-8 Mechanical Drawing

SOP-8 DIMENSION

MILLIMETERS INCHES

DIM

MIN MAX MIN MAX

A 4.80 5.00 0.189 0.196
B 3.80 4.00 0.150 0.157
C 1.35 1.75 0.054 0.068
D 0.35 0.49 0.014 0.019
F 0.40 1.25 0.016 0.049

1.27 (typ)

0.05 (typ)

K 0.10 0.25 0.004 0.009

M 0

P 5.80 6.20 0.229 0.244
R 0.25 0.50 0.010 0.019

TO-252-5L Mechanical Drawing

TO-252-5L DIMENSION

MILLIMETERS INCHES

DIM

MIN MAX MIN MAX

A 6.350 6.730 0.2509 0.265
B 9.080 10.44 0.357 0.411
C 0.460 0.640 0.018 0.025
D 1.27BSC

0.050BSC

E 2.190 2.380 0.086 0.094
F 0.460 0.570 0.018 0.022

G 1.400 1.780 0.055 0.070

H 0.460 0.570 0.018 0.022

I 5.340 5.550 0.210 0.219

J 1.520 2.030 0.060 0.080

Электронный компонент: TS39101CS5.0